DE60304301T2 - Housing of an electromechanical actuator for separating structural components - Google Patents

Abstract

An improved spool assembly (100) for non-explosive actuators used in electromechanical structural separation devices includes two spool halves (110,120) each having external surfaces (113,123) and a generally flat internal surface (114,124), a unitary and integral internal member (140) made of an electrically conductive material and having a link-wire portion (142) and two electrical terminal portions (144,146), and an external wrap-wire (130) wound around the two spool halves (110,120) and having a connecting end (134) connected to the link-wire portion (142) of the unitary and integral internal member (140) such that the wrap-wire (130) tightly binds the two spool halves (110,120) together to form a spool for retaining an external structural member (102). <IMAGE>

Description

Background of the invention

1. Field of the invention

The The present invention relates generally to the field of mechanical Structure separating devices used in aerospace, manufacturing and Construction industry, and in particular relates to the internal Construction and the designs non-explosive trigger, in electromechanical structure separation devices for triggering Structure or construction (element) separations are used.

2. Description of the state of the technique

electromechanical Structure separating devices are used extensively in the aerospace, manufacturing and construction industry used. The purpose of the separators is it a fast and reliable Separation of an externally mounted, structural load without damaging the external structure of the load carrier provide. Preferably, the separation mechanism is designed to that it is to be used in a repeatable way.

• 1. das US-Patent mit der Nr. 3,695,116, erteilt an Baur am 3. Oktober 1972 mit dem Titel "Non-Explosive Electrically Initiated Heat-Ignitable Actuator" (hierin nachfolgend als das "Baur Patent" bezeichnet);
• 2. das US-Patent mit der Nr. 3,924,688, erteilt an Cooper am 9. Dezember 1975 mit dem Titel "Fire Fighting System" (hierin nachfolgend als das "Cooper Patent" bezeichnet);
• 3. das US-Patent mit der Nr. 4,906,962, erteilt an Duimstra am 6. März 1990 mit dem Titel "Fuse Wire Switch" (hierin nachfolgend als das "Duimstra Patent" bezeichnet);
• 4. das US-Patent mit der Nr. 5,438,173, erteilt an Rudoy am 1. August 1995 mit dem Titel "Cell Bypass Switch" (hierin nachfolgend als das "erste Rudoy Patent" bezeichnet);
• 5. das US-Patent mit der Nr. 5,471,888, erteilt an McCormick am 5. Dezember 1995 mit dem Titel "Motion Initiator" (hierin nachfolgend als das "erste McCormick Patent" bezeichnet);
• 6. das US-Patent mit der Nr. 5,621,373, erteilt an McCormick am 15. April 1997 mit dem Titel "Non-Explosive Initiator with Link Wire Assembly" (hierin nachfolgend als das "zweite McCormick Patent");
• 7. das US-Patent mit der Nr. 5,748,066, erteilt an Holt am 5. Mai 1998 mit dem Titel "Cartridge Motion Initiator with Replaceable Link Wire Controller" (hierin nachfolgend als das "Holt Patent" bezeichnet);
• 8. das US-Patent mit der Nr. 6,133,818, erteilt an Hsieh am 7. Oktober 2000 mit dem Titel "Redundant Fuse Wire Release Device" (hierin nachfolgend als das "Hsieh Patent" bezeichnet);
• 9. die US-Patentveröffentlichung mit der Nr. US 2002/0080547 A1 einer Anmeldung von Rudoy am 27. Juni 2002 mit dem Titel "Elektrically und Mechanically Redundant Release Mechanism" (hierin nachfolgend als die "Rudoy Anmeldung" bezeichnet); und
• 10. das US-Patent mit der Nr. US 6,433,990 B1 erteilt an Rudoy am 13. August 2002 mit dem Titel "Frangible Actuator with Redundant Power Supply" (hierin nachfolgend als das "zweite Rudoy-Patent" bezeichnet).

The following ten (10) patents of the prior art have been considered relevant in the field of the present invention:

• U.S. Patent No. 3,695,116, issued to Baur on Oct. 3, 1972, entitled "Non-explosive Electrically Initiated Heat-Ignitable Actuator" (hereinafter referred to as the "Baur Patent");
• 2. U.S. Patent No. 3,924,688, issued to Cooper on December 9, 1975, entitled "Fire Fighting System" (hereinafter referred to as the "Cooper patent");
• 3. U.S. Patent No. 4,906,962, issued to Duimstra on March 6, 1990, entitled "Fuse Wire Switch" (hereinafter referred to as the "Duimstra Patent");
• 4. U.S. Patent No. 5,438,173, issued to Rudoy on August 1, 1995, entitled "Cell Bypass Switch" (hereinafter referred to as the "First Rudoy Patent");
• 5. U.S. Patent No. 5,471,888, issued to McCormick on December 5, 1995, entitled "Motion Initiator" (hereinafter referred to as the "First McCormick Patent");
• 6. U.S. Patent No. 5,621,373, issued to McCormick on April 15, 1997, entitled "Non-Explosive Initiator with Link Wire Assembly" (hereinafter referred to as the "second McCormick patent");
• 7. U.S. Patent No. 5,748,066, issued to Holt on May 5, 1998, entitled "Cartridge Motion Initiator with Replaceable Link Wire Controller" (hereinafter referred to as the "Holt Patent");
• 8. US Patent No. 6,133,818, issued to Hsieh on October 7, 2000, entitled "Redundant Fuse Wire Release Device" (hereinafter referred to as the "Hsieh Patent");
• 9. US Patent Publication No. US 2002/0080547 A1 of a Rudoy application June 27, 2002 entitled "Electrically and Mechanically Redundant Release Mechanism" (hereinafter referred to as the "Rudoy Application"); and
• 10. US Pat. No. US 6,433,990 B1 issued to Rudoy on August 13, 2002, entitled "Frangible Actuator with Redundant Power Supply" (hereinafter referred to as the "second Rudoy patent").

The Baur patent discloses a non-explosive, electrically triggered, heat-ignitable Trigger, in the form of a prestressed, shortenable double piston arrangement is constructed and arranged. When the shutter is in the unlikely position is located, the double piston assembly by a heat-triggered double shear pin and a listen Heat-ignitable wire arrangement prevented from shortening. The shear pins and their associated wires are made of a bimetallic composition that mainly consists of Aluminum and palladium is composed, which at ignition one violent, but non-explosive reaction that translates into all Parts of the material spreads. The structure of the double piston arrangement is such that when ignited individual or both shear pins a shortening of the double piston assembly is effected and thereby causes the release of the trigger becomes.

The Cooper patent discloses a fire protection system having a plurality of electromechanical heating wire triggers for non-explosive initiation of a corresponding plurality of fire extinguishers. The triggers are connected either in parallel to increase reliability or in series for a lighter continuity test. Each trigger has a split sleeve formed from two coil halves with a gripping wire wrapped around it, with a hook attached at one end to a heating wire connected to electrical leads mounted on one of the coil halves. A shank contacts the split sleeve such that separation of the coil halves is caused when they are not clamped by the gripping wire. Shaft displacement is triggered by applying a tripping current to the leads, which reduces the tensile stress applied by the gripper wire. As the tension of the heating wire decreases, the gripping wire loosens and thus allows the separation of the coil halves to allow the shaft to be displaced by an internal spring or external force. The shaft is either directly on a utility device, such as a fire extinguisher, for the sen displacement in a direction parallel to the center line of the shaft or mounted on a cylinder with fingers for a tilted to the center line of the shaft displacement.

The Duimstra patent discloses a spring-operated switching mechanism, in which the energy required to complete the switching process, in a spring (or in springs) is stored in a "strained" or stressed Position is retained by a fuse wire. The melting wire has the property of having a comparatively flat resistance coefficient over one huge Have temperature range. The mechanism works that way he electrical circuits to receive a suitable electrical Signal through the "melt" or "bypass" wire closes (opens), its severing is caused as a result of the reception of the electrical signal.

The First Rudoy patent discloses a cell bypass switch, in particular for aerospace applications was developed. The cell bypass switch can detect a battery cell failure, and automatically opens an alternate line around the failed cell by bypassing the failure and leaving the remaining battery system the continuation of his function is permitted. The cell bypass switch is designed to be parallel to the battery cell it protects place is. The present invention includes two electromechanical Trigger arrangements, on the top of the case for the respective operation of two pistons are mounted. Each of the electromechanical trigger arrangements includes two coil halves, which are held together by a tight winding of a gripping wire which ends in a bridgewire, the two electrical connections of the electromechanical connects. Each coil can due to the Clamping wire winding to hold back a spring biased piston. However, if sufficient electrical current through the terminals and the jumper wire is sent, the jumper wire becomes heat up and tear under the applied tensile load. This causes unwinding of the gripping wire, separating the coil halves and Releasing the piston.

The McCormick's first patent discloses an electrical initiator which coil halves includes, the solvable held together by a tortuous retention wire become. A wire bridge holds one Coil on which a coil half is attached, against a connector body and the other coil half. One Cavity inside the two coils physically holds a tensile stressed Shaft back. One Electric current that passes through the wire bridge causes that this brittle becomes and breaks, releasing the bobbin halves and the included shaft becomes.

The second McCormick patent discloses a wire bridge assembly for use in a non-explosive initiator that has a wire bridge inside a pair of tubes includes, the outer end every tube is formed in a loop and the opposite End is squeezed to the tubes physically and electrically with the included wire bridge connect to. The tubes are in an insulating body encapsulated.

The Holt patent discloses a controller that is provided Selectively release initiator with first and second elements which are clamped in engagement with an object whose movement in a forced direction. A spring wire winding hold the elements tightly around the object, a winding end is at one of the Elements attached and the other winding end is by a pair Jumper loops held the control, which is also solvable on one of the controls attached, which is also detachable attached to one of the elements by a bolt is. If the release of the object is intended, an electric Electricity of sufficient strength through the wire bridge loops sent, whereby the loops are destroyed, with the winding is released for unwinding and in return the object imposed for the Movement is released.

The Hsieh patent discloses a very reliable release apparatus used to stow or release desired devices, such as, for example, solar cell jibs, antenna alignment mechanisms, reflectors found on satellites, space stations, or spacecraft. The erection of the desired device is prevented or permitted by clamping or releasing a first element. The apparatus comprises a holding member having an opening and a first front side disposed about the opening. A second member is disposed in the opening when the first member is under tension and is adapted to be secured to an end of the first member. At least three locking elements, such as fusion wires, are disposed on the first front surface of the support member to clamp the second member within the opening to maintain tension on the first member. The second element is attached to the first element such that at least two of the fusion wires must be severed before the clamping of the second element is released. A system for triggering the release apparatus by selectively severing at least two of the locking members when mounting the apparatus is desired is provided.

The Rudoy application discloses an electrically and mechanically redundant Release mechanism using two fuse wires, an insulating axle to hold in place, in return a hook-shaped release end Retains a clamping wire. The Insulating axle is with two grooves, one for each fusible wire, and with a central hole midway between the grooves. A string is finished with a pair of loops at the end. The loop is fastened by a central hole in the insulating axis. The fusion wires are connected to two power supplies, acting as a redundant power supply or fused decoupling device. A gripping wire is about a pair of spool halves of a fragile one Shutter wound and stops these together. A release pin has a head section between the coil halves is caught, and a shaft portion. Because a load is a force on the release pin, There is a tendency for him to move away from a fragile trigger becomes. Power from any of the power supplies can be a failure cause the associated fuse wire, which due to Failure the insulating axis of the fixed position in place releases, and the release of the axle gives the grommet end free and allows the coil halves under the action of Load to fall apart. Should one of the power supplies off For some reason, electricity is also supplied by the other power supply through whose wire bridge flow to to cause a failure of the fuse wire. additional fuse wires can parallel to the enamel wires added be to premature separation of the clamping wire from the axis excluded.

The second Rudoy patent discloses a device for clamping of Objects and then their quick release, which includes two coil halves, which are held in place by a coil spring. The Spring is attached to one end with one of the coils and becomes held in place by a fragile wire at the other end, which in turn is connected to redundant power supplies. A Insulation is by coating a base section with alumina and attaching an insulating axle to the end of the spring, which the fragile wire is kept created. recesses inside the coils are provided to maximize the separation force.

Even though Many of the previously cited references describe various separation mechanisms have that use expandable coils that are held by retention wires and released when a wire bridge breaks, appears it is that none of the references cited its focus on the design and the construction of the wire bridge and their connection with the two electrical connections or has directed the way and the way in which such electric connections and such a wire bridge held mechanically in place between the two coil halves become.

The following will be on 1 of the attached drawings. This is with 10 an example of a typical prior art non-explosive release (NEA) as seen in the Cooper patent. This includes two coil halves 11 and 12 passing through a winding wire 17 for the backing of an external structure element 19 between the two coil halves 11 and 12 tied together. The winding wire 17 causes a stress on the coil halves 11 and 12 in the circumferential direction and has a curved end portion 18 on that in a loop of a wire bridge 13 is mounted. The jumper is with two electrical connections 14 and 16 connected.

When a trip current of sufficient strength to the terminals 14 and 16 is created, the wire bridge 13 heated, which is the tensile strength of the wire bridge 13 reduced to a level below the tensile load passing through the winding wire 17 at its curved end portion 18 on the wire bridge 13 is exercised, thereby breaking the wire bridge 13 to effect. This in turn causes a loosening of the winding wire 17 and a reduction in the circumferential stress imposed by the winding wire 17 on the bobbin halves 11 and 12 is applied, which allows the separation of the two coil halves, whereby the displacement of the external structural element 19 is allowed.

It There is a need, a new and improved design and construction the internal structural components of the coil assembly of the NEA, the used in electromechanical structure separation devices, provide the durability and reliability of the NEA's repeated operation increasing the assembly and Shorten the manufacturing process of the coil arrangements and reduce the material and reduce manufacturing costs of the NEA.

Summary of the invention

It is particularly desirable to provide an improved coil assembly for NEA, the be used in electromechanical structure separation devices, where the coil assembly a simple construction but still all Functions for operating as NEA are required.

It is also desirable to provide an improved coil assembly for NEA, wherein the Coil arrangement includes an internal structural element, in which the wire bridge and electrical connections in one piece Part are integrated.

It is also desirable to provide an improved coil assembly for NEA, wherein the Coil arrangement two coil halves includes the part in which the wire bridge and the electrical connection is integrated, hold in place when the two coil halves through tied the winding wire together are.

Of Further, it is desirable to provide an improved coil assembly for NEA, wherein the electrical connections the one with the wire bridge one piece are formed, electrically conductive surfaces, which on the outside the two coil halves, which are tied together by the winding wire, for contact connections with external electrical connectors are exposed.

Further it is desirable to provide an improved coil assembly for NEA, wherein the electrical connections, the one with the wire bridge one piece are formed to have electrical conductive sockets, of the outside the two coil halves, which are tied together by the winding wire, for a connector with external electrical connectors are accessible.

A embodiment The present invention may provide an improved coil assembly with integrated wire bridge and electrical connections for non-explosive trigger (NEA) used in electromechanical structure separation devices be used.

Around To generally describe an embodiment of the present invention The invention includes an improved coil assembly for NEA, which used in electromechanical structure separation devices, the arrangement having two coil halves, the respective outer surfaces and a generally flat inner surface have, one-piece and an integrated inner element made of an electrically conductive Material is made and a wire bridge section and two electrical Includes terminal portions, and includes an outer winding wire, the around the two coil halves is wound and having a connection end, with the wire bridge section of the one piece and integrated inner element is connected, so that the winding wire the two coil halves tightly together, around a coil for to form the support of an external structural element.

The inner surfaces at least one of said two coil halves have recesses, the general to an embodiment of the one-piece and integrated inner element fit the one-piece and to incorporate integrated interior elements such that when the two coil halves through the said winding wire are laced together, the one-piece and integrated interior element securely fixed in place between them is without a gap between the inner surfaces of the two coil halves too cause.

Of Furthermore, the two electrical connection sections of the one-piece and integrated inner element in each case a contact end, which is exposed and from the outside the two coil halves accessible is when they are tied together by the winding wire, to provide electrical connection contacts.

If an electric current of sufficient strength via the electrical connection contacts supplied becomes, becomes the wire bridge section of the one piece and internal integrated element heated, reducing its tensile strength to a degree below a tensile load is reduced from the connecting end of the Wickeldrahtes exerted on it becomes what causes that the wire bridge section of the one piece and integrated interior element breaks, which in turn causes that the winding wire loosens, which is the separation of the two coil halves from each other allowing the displacement of the external structural element is allowed.

A Coil arrangement for NEA used in electromechanical structure separation devices and embodying the present invention can be many unique Provide features and benefits. In particular, it can be the resistance and reliability increase the repeated operation of the NEA. It can also handle the assembly and shorten the manufacturing process of the coil arrangements. she Furthermore, the material and Reduce production costs of NEA.

To put it in more detail: an embodiment of the present invention comprises an improved coil assembly for non-explosive actuators used in electromechanical structure separation devices, comprising: (a) a first coil half having a generally semi-cylindrical body configuration with an upper end, a lower one End, a generally semi-cylindrical outer surface and a generally flat inner surface; (b) a second bobbin half having a generally semi-cylindrical body configuration with an upper end, a lower end, a generally semi-cylindrical outer surface, and a generally flat inner surface; (C) a one-piece and integrated inner element, the Herge of an electrically conductive material is and has a loop-shaped wire bridge portion and two electrical connection portions; (d) an outer winding wire wound around the first and second coil halves and having a connection end connected to the looped wire bridge portion of the one-piece and integrated inner member such that the winding wire tightly tapes the first and second coil halves about a coil for the maintenance of an external structural element; (e) wherein the inner surface of at least one of the first and second coil halves has recesses generally conforming to a configuration of the one-piece and integrated inner member to receive the one-piece and integrated inner member such that when the first and second coil halves are laced together by the winding wire in that the one-piece and integrated inner member is securely fixed in place therebetween without causing a gap between the inner surfaces of the first and second coil halves; and (f) the two electrical terminal portions of the one-piece and integrated inner member each having a generally flat contact surface exposed on the outside of the upper ends of the first and second coil halves when tied together by the winding wire to provide electrical terminal pads; (g) wherein, when an electric current of sufficient strength is supplied through the contact surfaces of the electrical connection portions of the one-piece and integrated inner member, the wire bridge portion of the one-piece and integrated inner member is heated, thereby reducing its tensile strength to below a tensile load imposed by is applied to the connecting end of the winding wire, which causes the wire bridge portion of the integral and integrated inner member to break, which in turn causes the winding wire to loosen, allowing separation of the first and second coil halves from each other, thereby displacing the external structural member is allowed.

Around to specify it in detail alternatively: an embodiment of the present invention The invention includes an improved coil assembly for non-explosive Shutter that be used in electromechanical structure separation devices, comprising: (a) a first coil half having a generally semi-cylindrical body configuration with an upper end, a lower end, a generally semi-cylindrical outer surface and a generally flat inner surface; (b) a second coil half with a generally semi-cylindrical body design with a upper end, a lower end, a generally semi-cylindrical outer surface and a generally flat inner surface; (c) a one-piece and an integrated inner element made of an electrically conductive Material is made and a loop-shaped wire bridge section and two electrical connection sections; (d) an outer winding wire, which is wound around the first and second coil half and the one Connecting end, with the looped wire bridge section of the one piece and integrated inner element is connected, so that the winding wire the first and second spool halves tightly together, around a coil for to form the support of an external structural element; (e) where the Inner surface at least one of the first and second coil halves has recesses, the general to an embodiment of the one-piece and integrated inner element fit the one-piece and to incorporate integrated interior elements such that when the first and second bobbin half are laced together by the winding wire, the one-piece and integrated interior element securely fixed in place between them is without a gap between the inner surfaces of the first and second coil half to effect; and (f) wherein the two electrical connection sections of the one piece and integrated inner element each have a socket receptacle, in a corresponding complementary recess at the top is arranged by one of the first and second coil half, so that the Socket receptacle from the outside the upper ends of the first and second coil halves is accessible when passing through tied the winding wire together are, for providing electrical connection sockets; (g) wherein when an electric current of sufficient magnitude across the Sockets of the electrical connection sections of the one-piece and supplied integrated internal element is, the wire bridge section of the one-piece and integrated inner element is heated, reducing its tensile strength to a degree below a tensile load is reduced from the connecting end of the Wickeldrahtes exerted on it becomes what causes that the wire bridge section of the one piece and integrated interior element breaks, which in turn causes that the winding wire loosens, which is the separation of the first and second coil half allows each other, reducing the displacement of the external structural element is allowed.

To put it more generally: an embodiment of the present invention includes an improved coil assembly for non-explosive actuators used in electromechanical structure separation devices, comprising: (a) two coil halves each having an outer surface and a generally flat inner surface; (b) a one-piece and integrated inner member made of an electrically conductive material and having a wire bridge portion and two electrical terminal portions; (c) an outer winding wire around the two coils halves and having a connection end connected to the wire bridge portion of the one-piece and integrated inner member, so that the winding wire tightly tying the two coil halves together to form a coil for supporting an external structural element; (d) the inner surface of at least one of the two coil halves having recesses generally conforming to a configuration of the one-piece and integrated inner member to receive the one-piece and integrated inner member such that when the two coil halves are laced together by the winding wire, the one-piece and one-piece integrated inner member is securely fixed in place therebetween, without causing a gap between the inner surfaces of the two coil half; and (e) wherein the two electrical terminal portions of the one-piece and integrated inner members each have a contact end which is exposed and accessible from the outside of the two coil halves when tied together by the winding wire to provide electrical connection contacts; (f) wherein, when an electric current of sufficient magnitude is supplied through the electrical terminals, the wire bridge portion of the one-piece and integrated inner member is heated, whereby its tensile strength is reduced to an extent below a tensile load exerted thereon by the connecting end of the winding wire causing the wire bridging portion of the integral and integrated inner member to break, which in turn causes the winding wire to loosen, allowing separation of the two coil halves from each other, thereby permitting the displacement of the external structural member.

Around To give it more generally: an embodiment of the present invention The invention includes an improved coil assembly for non-explosive Trigger, used in electromechanical structure separation devices comprising: (a) two coil halves each having an outer surface and have a generally flat inner surface; (b) a one-piece and an integrated inner element made of an electrically conductive Material is made and a wire bridge section and two electrical Having connecting portions; and (c) an outer winding wire wound around the two coil halves is wound and having a connection end, with the wire bridge section of the one piece and integrated inner element is connected, so that the winding wire the two coil halves tightly together, around a coil for to form the support of an external structural element; (d) where then, if an electric current of sufficient strength over the electrical connection contacts supplied becomes, the wire bridge section of the one piece and integrated inner element is heated, reducing its tensile strength to a degree below a tensile load is reduced from the connecting end of the Wickeldrahtes exerted on it becomes what causes that the wire bridge section of the one piece and integrated interior element breaks, which in turn causes itself the winding wire loosens what separating the two coil halves from each other allowing the displacement of the external structural element is allowed.

Brief description of the figures

in the The following is for the purpose of illustration and not of limitation in particular With reference to the figures. It shows the following:

1 Fig. 12 is a perspective view of a prior art non-explosive trip device (NEA) used in electromechanical structure separation devices;

2 Fig. 13 is a perspective view of one of the preferred embodiments of the improved coil assembly for a NEA, used in electromechanical structure separation devices, in accordance with the present invention;

3 is an exploded perspective view of the preferred embodiment of the invention improved coil assembly, which in 2 is shown;

4 is a partial exploded perspective view of the preferred embodiment of the improved coil assembly according to the invention, which in 3 is shown; and

5 Figure 11 is an exploded perspective view of another of the preferred embodiments of the improved NEA coil assembly of the present invention used in electromechanical pattern separation devices.

detailed Description of the Preferred Embodiments Although below specific embodiments of the present invention will be described with reference to the figures, should be clear that such embodiments are exemplary only are merely illustrative of a small number of many possible specific embodiments serve, which can represent realizations of the principles of the invention. Various Modifications and modifications that are suitable for the person skilled in the art Invention is concerned, obviously, seem in scope to fall of the present invention.

The following is on the 2 to 4 Referenced. This is with 100 Figure 1 shows one of the preferred embodiments of the non-explosive triplet (NEA) improved coil assembly of the present invention used in electromechanical pattern separation devices. The basic components of the coil arrangement 100 includes two coil halves 110 and 120 , a winding wire 130 for constricting the two coil halves 110 and 120 , and a one-piece and integrated inner element 140 ,

The two coil halves 110 and 120 each have a generally semi-cylindrical configuration with an upper end 111 ( 121 ), a lower end 112 ( 122 ), a generally semi-cylindrical outer surface 113 ( 123 ), and a generally flat inner surface 114 ( 124 ) on. The upper and lower ends 111 . 112 ( 121 . 122 ) of the coil halves 110 . 120 can outer flanges 115 . 116 ( 126 ) to prevent slipping of the winding wire 130 from the bobbin halves 110 . 120 to prevent. One of the flanges (eg the lower flange 116 the coil half 110 ) can setting notches 117 for fixing the lower end 132 of the winding wire 130 exhibit. The coil halves 110 and 120 may be made of an epoxy plastic material.

The winding wire 130 exercises on the coil halves 110 and 120 a circumferential stress to this for the maintenance of an external structural element 102 between the two coil halves 110 and 120 constrict. The winding wire 130 has an upper end 134 that is in a loop of the wire bridge 142 is hooked on. The winding wire 130 can be made of stainless steel.

The wire bridge 142 is an integrated portion of the one-piece interior element 140 , The one-piece interior element 140 also has two electrical connection sections 144 and 146 on. The one-piece interior element 140 is made of an electrically conductive material, such as stainless steel.

The two electrical connections 144 and 146 each have a contact surface on the outside of the two coil halves 110 . 120 for a surface contact connection with external electrical connectors (not shown) of an electrical power source. When an electric current of sufficient strength to the electrical connections 144 and 146 is created, the wire bridge 142 heated. This reduces their tensile strength. When the tensile strength of the wire bridge 142 is reduced to a level that is below the tensile stress on the wire bridge 142 through the top 134 the winding wire 130 is exercised breaks the wire bridge 142 , which causes the winding wire 130 is loosened, and the separation of the two coil halves 110 . 120 is permitted by each other, whereby the displacement of an external structural element 102 is allowed.

One of the two flat inner surfaces 114 . 124 the two coil halves 110 . 120 comes with recesses 125 Be provided for the design of the one-piece inner element 140 fit, leaving the one-piece interior element 140 in place between the two coil halves 110 . 120 can be securely held without a gap between their generally flat inner surfaces 114 . 124 to effect.

The generally flat interior surfaces 114 . 124 the two coil halves 110 . 120 also be with a central groove 118 ( 128 ). When the two coil halves are tied together, these form central grooves 118 . 128 a central passage for the maintenance of the external structural element 102 ,

The generally flat interior surfaces 114 . 124 the two coil halves 110 . 120 are further provided with projecting positioning elements 119 and complementary holes 129 for locking the position of the two coil halves 110 . 120 be provided, allowing the quick assembly of the two coil halves 110 . 120 facilitated. If the two coil halves 110 . 120 through the winding wire 130 be laced together grab the projecting positioning 119 in complementary holes 129 whatever serves the purpose, both an axial and lateral displacement of the two coil halves 110 . 120 to prevent relative to each other.

The following is on the 5 It is with 200 another of the preferred embodiments of the improved according to the invention improved coil assembly for NEA, which are used in electromechanical structure separation devices. All aspects of this alternative embodiment 200 are generally similar to those of the embodiment 100 that was previously described, except that the connection sections 244 . 246 of the one-piece interior element 240 are now designed so that they are female receptacles, each in complementary recesses 214 . 216 the coil half 210 for receiving electrical connectors of an external electrical power source (not shown) are arranged.

A coil assembly embodying the present invention with integrated wire bridge and NEA electrical connections used in electromechanical structure separation devices can provide many advantages. In particular, it can provide the reliability and consistency of the NEA's repeated operations improve.

she can also the manufacturing and part costs of the coil assemblies NEA used in electromechanical structure separation devices will decrease. It can also save time and labor, that involved assembling and manufacturing the coil assemblies, those for NEA be used in electromechanical structure separation devices, reduce.

Of course, there is not intended to limit the present invention to any particular Form or arrangement or any specific configuration or any specific use disclosed herein restrict, as they are modified in various details or relations without departing from the scope of the claimed invention, herein previously shown and described, the device shown merely the illustration and disclosure of an executable Design serves and does not serve all the various forms or To show modifications that could embody this invention or operated according to the invention could become.

The The present invention has been described in considerable detail. to satisfy the patent laws to do so by having a full disclosure of at least one of their embodiments provided. However, it is not the intention of such detailed description, general features or principles of the present invention in any way, the scope is intended to be limited only by the terms of the appended claims.

Claims (7)

Coil construction ( 100 ; 200 ) for a non-explosive initiator used in electromechanical structure separation devices, comprising: a. two coil halves ( 110 . 120 ; 210 . 220 ), the outer surfaces ( 111 to 113 . 121 to 123 ) and a generally flat inner surface ( 114 . 124 ) exhibit; b. a one-piece and integrated inner element ( 140 ; 240 ), which is made of an electrically conductive material and a wire bridge section ( 142 ) and two electrical connection sections ( 144 . 146 ; 244 . 246 ) having; c. an outer winding wire ( 130 ) around the two coil halves ( 110 . 120 ; 210 . 220 ) and which is a connecting end ( 134 ) which is connected to the wire bridge section ( 142 ) of the one-piece and integrated inner element ( 140 ; 240 ), so that the winding wire ( 130 ) the two coil halves ( 110 . 120 ; 210 . 220 ) tightly together to form a coil for holding an external structural element ( 102 ) to build; d. the inner surface ( 114 . 124 ) at least one of the two coil halves ( 110 . 120 ; 210 . 220 ) Recesses ( 125 ), which generally relates to an embodiment of the one-piece and integrated inner element ( 140 ; 240 ) to the one-piece and integrated inner element ( 140 ; 240 ) such that when the two coil halves ( 110 . 120 ; 210 . 220 ) through the winding wire ( 130 ), the one-piece and integrated inner element ( 140 ; 240 ) securely fixed in place therebetween, without a gap between the inner surfaces ( 114 . 124 ) of the two coil halves ( 110 . 120 ; 210 . 220 ) to effect; and e. wherein the two electrical connection sections ( 144 . 146 ; 244 . 246 ) of the one-piece and integrated inner element ( 140 ; 240 ) each have a contact end which is exposed and from the outside of the two coil halves ( 110 . 120 ; 210 . 220 ) is accessible when passing through the winding wire ( 130 ) are tightened to electrical connection contacts ( 144 . 146 ; 244 . 246 to provide); f. wherein, when an electric current of sufficient strength via the electrical connection contacts ( 144 . 146 ; 244 . 246 ), the wire bridge section ( 142 ) of the one-piece and integrated inner element ( 140 ; 240 ), whereby its tensile strength is reduced to a degree below a tensile load exerted by the connecting end ( 134 ) of the winding wire ( 30 ), which results in the wire bridge section ( 142 ) of the one-piece and integrated inner element ( 140 ; 240 ), which in turn causes the winding wire ( 130 ) loosens what the separation of the two coil halves ( 110 . 120 ; 210 . 220 ), whereby the displacement of the external structural element ( 102 ). Coil construction according to claim 1, wherein the two coil halves ( 110 . 120 ; 210 . 220 ) at least one outer end flange ( 115 . 116 . 125 . 126 ) to prevent slippage of the winding wire ( 130 ) of the two coil halves ( 110 . 120 ; 210 . 220 ) to prevent. Coil construction according to claim 2, wherein the at least one outer end flange ( 116 ) at least one Abbindekerbe ( 117 ) for fastening an opposite end of the winding wire ( 130 ) having. Coil construction according to claim 1, 2 or 3, wherein the two coil halves ( 110 . 120 ; 210 . 220 ) each have a central groove ( 118 . 128 ), which form a central passage when the two coil halves ( 110 . 120 ; 210 . 220 ) for the maintenance of the external structural element ( 102 ) tied together are. Coil construction according to one of the preceding claims, wherein the inner surfaces ( 114 . 124 ) of the two coil halves ( 110 . 120 ; 210 . 220 ) at least one projecting positioning element ( 119 ) and at least one complementary hole ( 129 ) for locking the position of the two coil halves ( 110 . 120 ; 210 . 220 ) and to prevent their relative movement. Coil construction according to one of the preceding claims, wherein the exposed contact end of the electrical connection sections ( 144 . 146 ) of the integral and integrated inner element ( 140 ) has a generally flat contact surface for providing electrical connection pads. Coil construction according to one of claims 1 to 5, wherein the exposed contact end of the electrical connection sections ( 244 . 246 ) of the one-piece and integrated inner element ( 240 ) a socket receptacle ( 214 . 216 ) for providing electrical connection sockets.